- 1(current)
Q. No.Match the scientists listed in column-I with their ideas listed in column-II and select the correct option
1. a(iii), b(ii), c(i), d(iv)
2. a(i), b(ii), c(iii), d(iv)
3. a(ii), b(iii), c(i), d(iv)
4. a(iii), b(ii), c(iv), d(i)
| Column-I | Column-II | ||
| a. | Lamarck | (i) | Origin of life preceded by chemical evolution |
| b. | Darwin | (ii) | Reproductive fitness |
| c. | Haldane | (iii) | Inheritance of acquired characters |
| d. | Malthus | (iv) | Populations are stable in size except for the seasonal fluctuations |
1. a(iii), b(ii), c(i), d(iv)
2. a(i), b(ii), c(iii), d(iv)
3. a(ii), b(iii), c(i), d(iv)
4. a(iii), b(ii), c(iv), d(i)
Subtopic: Â Examples of Chemical Evolution |Â Other Theories of Origin of Life |Â Theory of Evolution & Lamarckism |Â Darwin's Theory |Â Modern Theory of Evolution |
 87%
From NCERT
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Assertion(A): Australian marsupials can be taken as an example of adaptive radiation.
Reason(R): A number of marsupials, evolved from an ancestral stock, but all within the Australian island continent.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason(R): A number of marsupials, evolved from an ancestral stock, but all within the Australian island continent.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Theory of Evolution & Lamarckism |Â Modern Theory of Evolution |Â Genetic Basis of Adaptation |
 76%
From NCERT
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Assertion(A): Analogous structures are a result of convergent evolution.
Reason(R): Different structures evolving for the same function and hence having similarity.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason(R): Different structures evolving for the same function and hence having similarity.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Concept of Organic Evolution: Evidence: 1 |Â Concept of Organic Evolution: Evidence: 2 |Â Concept of Organic Evolution: Evidence: 3 |Â Modern Theory of Evolution |
 90%
From NCERT
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Assertion(A): Evolution is not a directed process in the sense of determination.
Reason(R): It is stochastic process based on chance events in nature and chance mutation in the organisms.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Reason(R): It is stochastic process based on chance events in nature and chance mutation in the organisms.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Theory of Evolution & Lamarckism |Â Modern Theory of Evolution |Â Natural Selection |Â Genetic Basis of Adaptation |
 77%
From NCERT
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Assertion (A): According to Darwin, fitness means reproductive fitness.
Reason (R): Those who are a better fit in the environment will leave more progenies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Those who are a better fit in the environment will leave more progenies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Darwin's Theory |Â Summary of Darwin's Theory |Â Modern Theory of Evolution |
 86%
From NCERT
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Assertion (A): As per Darwin, over many generations, survivors will leave more progenies.
Reason (R): Survivors have variations that make resource utilization better for them.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Survivors have variations that make resource utilization better for them.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Theory of Evolution & Lamarckism |Â Darwin's Theory |Â Summary of Darwin's Theory |Â Modern Theory of Evolution |
 83%
From NCERT
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